GET IT IMMEDIATELY, worth every penny

Literally after just two weeks of using it my hair stopped falling out as much as before. It's nothing compared to how much I used lose. RECOMMENDED! Thank you Kerastase <3

Originaly posted on  kerastase.ca

Yes go buy it!!

[This review was collected as part of a promotion.] I thing the serum helps my hair to not fall out I have a lot of baby hairs.

Originaly posted on  kerastase-usa.com

Must Have

[This review was collected as part of a promotion.] I changed to this product because my hair fall out so much. In a short period of time, I already see a big difference result in reducing hair lost.

Originaly posted on  kerastase-usa.com

LOVE THIS

Helped my shedding so much! Love this product and the smell so much

Originaly posted on  kerastase-usa.com

Good

[This review was collected as part of a promotion.] It’s very nice and it made my hair look healthy. I will try it Again

Originaly posted on  kerastase-usa.com

Would Definitely repurchase

[This review was collected as part of a promotion.] So much difference seen using this product would totally recommend.

Originaly posted on  kerastase-usa.com

IT WORKS

[This review was collected as part of a promotion.] I was having postpartum hair loss and when I used this my hair was growing like crazy!!!

Originaly posted on  kerastase-usa.com

Game change

[This review was collected as part of a promotion.] I can’t live without this product anymore. My hair changed from a dry curly to a moisturizing curly, also the smells is amazing

Originaly posted on  kerastase-usa.com

Wonderful product for dry gray hair

[This review was collected as part of a promotion.] This product is amazing. Keeps my hair ends from splitting and cracking.

Originaly posted on  kerastase-usa.com

Solid stuff!

I used it for 1 week to help with some scanty growth around the temple of my head and the top. It makes my hair thick, including helping the length (bangs got longer). Highly recommend product.

Originaly posted on  kerastase-usa.com

Good serum

This serum seems to help with the growth of my hair.

Originaly posted on  kerastase-usa.com

Most helpful

[This review was collected as part of a promotion.] I have found this item to assist in my thinning hair.

Originaly posted on  kerastase-usa.com

Life Saver

[This review was collected as part of a promotion.] This mousse is a necessity for my very fine soft slightly wavy hair to have any body or lift. I’ve been using for more years than I can recall. My stylists have used instead of conditioner as my hair is so fine that anything else weighs it down.

Originaly posted on  kerastase-usa.com

Already on my 2nd Bottle

[This review was collected as part of a promotion.] Results are instant, and it doesn’t make my fine hair greasy. Truly noticeable difference with the amount of hair lost in the shower!

Originaly posted on  kerastase-usa.com

Absolutely worth it

I am about to purchase my fourth or fifth bottle. It's the only thing saving my hair right now

Originaly posted on  kerastase-usa.com

Ease of use but…

I went through three bottles using it every night for 6 weeks and then every other night until I ran out. However, I couldn’t really see the results. So unsure if it’s the product or me meaning there may be other factors to consider.

Originaly posted on  kerastase-usa.com

Unbelievable product

[This review was collected as part of a promotion.] Leaving my hair healthier, with an added touch of shine. Love this product

Originaly posted on  kerastase-usa.com

Huile kerastase au peptide

Excellent j ai vu des ressauter j ai des repusse et des grand chevelu de bébé je continue l’huile

Originaly posted on  kerastase.fr

Feels great!

Definitely feeling a difference in volume. Getting a lot of compliments after day two!! Buying again!

Originaly posted on  kerastase-usa.com

Stronger Roots, Less Fall — Worth the Hype”

I’ve been using the Kérastase Genesis Serum Fortifiant consistently, and it truly delivers on strengthening hair from the roots. It absorbs quickly and doesn’t make the scalp greasy, which I love. After a few weeks, hair fallout during brushing noticeably decreased and my roots feel healthier. The scent is luxurious but not overpowering.

Originaly posted on  kerastase-usa.com

right path to healthy hair

[This review was collected as part of a promotion.] This is literally magic in a bottle, fast results.

Originaly posted on  kerastase-usa.com

Love it

[This review was collected as part of a promotion.] I love the smell and haven’t had any hair loss since I’ve started using it

Originaly posted on  kerastase-usa.com

Good smell, light serum

I like it's not too oily. I have notice a decrease on my shed.

Originaly posted on  kerastase-usa.com

BEST THING THAT'S HAPPENED TO MY HAIR

I AM CONVINCED THAT IN THE 4 WEEKS THAT I HAVE BEEN USING THIS SERUM MY HAIR HAS REGENERATED, THICKENED. I SAW IMMEDIATE IMPROVEMENT TO MY HAIR FALLING. TO THE POINT WHERE I HAVE MINIMAL HAIR SHEDDING AFTER MY SHOWERS. I NEED THIS BY THE GALLONS PLEASE

Originaly posted on  kerastase-usa.com

Love

This product is just fantastic. I Ribot it again for the second time.

Originaly posted on  kerastase-usa.com

Must try!

[This review was collected as part of a promotion.] Amazing serum!! Good results have used multiple bottles now

Originaly posted on  kerastase-usa.com

Less shedding

This is outstanding! My hair has 90% stopped falling out after using my first bottle. Hair feels clean & smooth upon using & does not leave any filmy residue on the scalp. Can use daily without hair feeling weighed down! On a long hair growth journey after cutting 10 inches last spring- I totally miss my long hair so growing it out again but want super healthy hydrated locks this time, just reordered my 2nd bottle

Originaly posted on  kerastase-usa.com

Good

I feel so good for my hair & I will continue use products

Originaly posted on  kerastase-usa.com

Serum genesis

[This review was collected as part of a promotion.] The Kérastase Genesis Serum is honestly worth all the hype! 🩷 The texture is super light, non-greasy, and absorbs quickly, plus it smells like a luxury salon treatment. After a few weeks, I noticed way less hair fall and lots of new baby hairs growing in. My roots feel stronger, and my hair looks smoother and shinier overall. Using it at night makes my hair feel so soft and healthy the next morning. Totally worth the price if you’re struggling with weak or thinning hair!

Originaly posted on  kerastase-usa.com

5/5

[This review was collected as part of a promotion.] Love this product. Helped my hair growth within a month.

Originaly posted on  kerastase-usa.com

Amazing product

[This review was collected as part of a promotion.] I bought this when I traveled overseas. My stylist recommended i used it because my hair is thin and very fine. As soon as I got home in USA, I started using Keratase I noticed there were no hair falls found on my comb. Before using this product, I would find a handfull of hair and it will always upset me. But i was really impressed with how fadt Kerastase works on my hair. I have tried so many different products and this is a keeper. Oh did I mention Kerastase is not oily on your scalp and it smells amazing 🤩

Originaly posted on  kerastase-usa.com

Absolutely inlove

[This review was collected as part of a promotion.] I love this product, I’m impressed with the quick results

Originaly posted on  kerastase-usa.com

Amazing results

This serum has been a lifesaver for reducing hair fall due to breakage. The texture is lightweight and absorbs quickly without leaving any greasy residue, which makes it perfect for daily use. After consistent application, I’ve noticed my hair feels stronger and looks healthier from root to tip. It also adds a subtle shine and softness without weighing the hair down. The fragrance is fresh and elegant, giving that salon-like experience at home. I appreciate that it targets scalp health as well as hair strength, making it a great all-around treatment for fragile hair.

Originaly posted on  kerastase-usa.com

Love this product

I have seen new growth and my hair has felt so much stronger.

Originaly posted on  kerastase-usa.com

I dont see any result

[This review was collected as part of a promotion.] I am almost at the end of my first bottle! I guess the se ret is also to massage the scalp agter the application. However I am not sure if they have remove the minoxidil from this product, as it is banned in the US!

Originaly posted on  kerastase-usa.com

its soy amaizing

[This review was collected as part of a promotion.] It’s amazing I like mi hair so much better than used this products

Originaly posted on  kerastase-usa.com

This product is amazing

One of the things I liked about this serum is that it reduced hair loss and now I have strong and healthy hair.

Originaly posted on  kerastase-usa.com

serum

noticed less hair fall so far . its good . i hope it will keep doing what it claims

Originaly posted on  kerastase-usa.com

Huge Difference

[This review was collected as part of a promotion.] I noticed a huge difference in hair fall and I credit this product. It took 4 weeks or so but I absolutely noticed that there were fewer and fewer hairs in my brush each day.

Originaly posted on  kerastase-usa.com

I like it so far

I am seeing some baby hairs. So far I like it. I find that you have to use a lot of product for it to work though. I will continue to use it.

Originaly posted on  kerastase-usa.com

It’s the second time using this product

[This review was collected as part of a promotion.] I love this line. The genesis products are so good. It’s the second time that I’ve been using it and the results are amazing

Originaly posted on  kerastase-usa.com

Great for breakage

[This review was collected as part of a promotion.] Great for scalp and damaged hair/breakage due to highlights

Originaly posted on  kerastase-usa.com

great product

I can feel a difference in the hair no falling down

Originaly posted on  kerastase-usa.com

Really helps with hair fall

After two weeks, I notice my hair falling less in the shower. I usually only need two drops instead of four. One bottle lasts me about 3 months and that's with using it every day.

Originaly posted on  kerastase-usa.com

Good for growing hair.

I’ve been using this for a week and feels a little like my hair is growing. But it hasn’t stopped my hair from falling. I have new hairs but what’s the point if they would still fall.

Originaly posted on  kerastase-usa.com

Amazing

My mom had a bald spot in her hair that really bothered her, until I got her this product. Now she can’t stop thanking me—she even prays for me every day for introducing her to this amazing serum! She’s seen incredible growth and a huge difference. I absolutely love it!

Originaly posted on  kerastase-usa.com

Helps my hair with fallout!!

[This review was collected as part of a promotion.] This product seriously changed my struggles with hair fallout! Highly recommend!

Originaly posted on  kerastase-usa.com

SKELLS AMAZING

Has helped my hair so much. Been using it consistently & you can tell a difference on my scalp.

Originaly posted on  kerastase-usa.com

Works

[This review was collected as part of a promotion.] Since I started using it, my hair is a little stronger and I only use it once a week.

Originaly posted on  kerastase-usa.com

Drastic hair loss after using serum

[This review was collected as part of a promotion.] Sadly not for me. Being completely honest, I wish this product was sold in a smaller size as it was a first time purchase and I am not fully happy. I have been using it for a little less then two months, with no good results, my hair texture does not feel healthier and after using it, my hair has been falling out wayyy more then before using it. On the bright side, it smelled nice.

Originaly posted on  kerastase-usa.com

So good

[This review was collected as part of a promotion.] I have had so much less hair fall out and shedding!

Originaly posted on  kerastase-usa.com

Genesis serum

[This review was collected as part of a promotion.] I saw a bug improvement in my hair during the first week of using genesis , I am not losing so much hair.

Originaly posted on  kerastase-usa.com

Amazing language of hair!!! Love this smell and 💛

[This review was collected as part of a promotion.] This product is absolute amazing for my hair!!! I have never in my life thought of this product and I really recommend anyone who has hair issues!!! I would buy this all-over and over again!!!

Originaly posted on  kerastase-usa.com

Second Bottle

[This review was collected as part of a promotion.] This is the second bottle I purchase and I’m seeing a lot of baby hairs! Doesn’t make my hair feel oily and I love the scent

Originaly posted on  kerastase-usa.com

Makes my scalp itchy

this makes my scalp itchy and seems pretty watered down , the first couple ingredients is alcohol and water and it feels a little too harsh for my sensitive scalp

Originaly posted on  kerastase-usa.com

The best

[This review was collected as part of a promotion.] this serum has changed my hair completely. It’s thicker, fuller, and no more baby hairs!

Originaly posted on  kerastase-usa.com

Best hair serum

I have been using the Kerastase Genesis for about 3 months now and I can honestly say I have noticed a difference. Since adding this product to my routine, the amount of hair fall has fall has reduced and my strands look and feel stronger.

Originaly posted on  kerastase-usa.com

Stopped my hair fall

amazing product, would definitely keep on buying more!

Originaly posted on  kerastase-usa.com

Useful

[This review was collected as part of a promotion.] It ready helps me maintain the hair, less hair is falling

Originaly posted on  kerastase-usa.com

So amazing

Smells so good and the scent last all day , I just got it so and I’ve been shedding alot so I can’t wait to see what it does

Originaly posted on  kerastase-usa.com

made my hair super soft!

made my dry damaged hair feel like normal again. No longer gummy and ripping. Hair fallage was also alot less.

Originaly posted on  kerastase-usa.com

VERY GOOD SERUM

[This review was collected as part of a promotion.] It definitely do what is supposed to. It helps with the falling and I also see more baby hairs growing

Originaly posted on  kerastase-usa.com

Excellent hair growth

[This review was collected as part of a promotion.] I have been using this for about a year. My hair is growing back! It smells amazing as well. I have so much new growth, especially around my crown, which was a huge issue before.

Originaly posted on  kerastase-usa.com

hair serum

[This review was collected as part of a promotion.] love this serum! use it after wash days and keeps my hair smelling so good!

Originaly posted on  kerastase-usa.com

Good

I loved the smell and did notice less Hair Breakage from scalp

Originaly posted on  kerastase-usa.com

Not Effective and Too Strongly Scented

[This review was collected as part of a promotion.] I was really hoping this serum would help my scalp, but unfortunately it didn’t work for me at all. I used it regularly as instructed, but I saw no improvement in my scalp condition. Instead, it left my scalp feeling uncomfortable. Another major issue for me was the fragrance. The scent was extremely strong and overpowering—it lingered for a long time and became unpleasant, especially since it’s applied directly to the scalp. It was too intense for daily use and made it difficult to continue using the product. Overall: Disappointed with the performance and the overpowering smell. It might work for others, but it wasn’t suitable for my scalp.

Originaly posted on  kerastase-usa.com

Absolutely obsessed!

[This review was collected as part of a promotion.] This is my 3rd bottle and I cannot say better things!

Originaly posted on  kerastase-usa.com

Genesis Serum

I've been using Genesis Serum for 30 days and haven't seen any results yet. I'll continue using it and come back with my feedback.

Originaly posted on  kerastase-usa.com

Serum with great results

My hair was thinning out and now feels and looks healthy!

Originaly posted on  kerastase-usa.com

Saw a difference on day 3! But not enough serum

[This review was collected as part of a promotion.] This has defiantly helped my hair not fall as much but the reason for the four stars is the scent is to overpowering for someone with allergies and for someone who washes their hair once a week, this made my hair look greasy and feel bitter at the top. I have been using this for 3 days now and you are supposed to use this everyday for 6 weeks but half the bottle is already gone! Glad I tried it but it's not alot if its only been 3 days and my bottle is half gone. They should give you a bottle thats at least 6 weeks if thats what the directions are

Originaly posted on  kerastase-usa.com

Genesis Serum Fortifiant Hair Serum

I have used it for almost two months and have seen the results, but it hasn't stopped my hair from falling out.

Originaly posted on  kerastase-usa.com

Great product! I highly recommend it, use it very

[This review was collected as part of a promotion.] Great product! I highly recommend it, use it very often

Originaly posted on  kerastase-usa.com

Work pretty well

[This review was collected as part of a promotion.] I used this product for 2 years and my hair have been growing out alot

Originaly posted on  kerastase-usa.com

So good!

This product has made a huge difference in my hair! Love it so much!

Originaly posted on  kerastase-usa.com

Best hair serum

Makes my hair grow and smells very nice! My favorite hair serum!

Originaly posted on  kerastase-usa.com

Amazing Scalp Serum!

I’ve been using the Kérastase Genesis Serum Fortifiant consistently, and I’m truly impressed. From the first application, my scalp felt fresher and my hair less brittle, which is exactly what I was hoping for. The lightweight serum absorbs quickly, doesn’t leave any greasy residue, and the scent is a luxurious bonus. I’ve noticed fewer strands in the shower and a stronger feel at the roots, my hair genuinely feels more resilient. The pump dispenser makes application smooth and mess free. While it is a splurge, for those dealing with breakage or weakened hair, it seems well worth the investment. I am trying to grow my hair back quickly and strong, so I can dye my hair blonde again. So far it is working great!

Originaly posted on  kerastase-usa.com

EXcellent product

Genesis Serum Fortifiant restored my hair's health. I had some highlights done, which dried out my hair a lot and weakened it considerably. This is my second time using it, and I've noticed the difference since the second application. Thank you, Kerastase. The quality of your products is wonderful. I love them!

Originaly posted on  kerastase-usa.com

Lots of hype, little results.

I used it as directed by the brand for six weeks, but I didn't see any results. I just spent money.

Originaly posted on  kerastase-usa.com

AMAZING!!

Love this product! saw a difference in less fall out

Originaly posted on  kerastase-usa.com

Absolutely love it

Love the smel! It helped my hair tremendously!! Will recommend

Originaly posted on  kerastase-usa.com

Fantastic

I love for ever ,serum genesis. 😍🥰love, love, love 🤩🤩🤩🤩

Originaly posted on  kerastase-usa.com

Thinning

[This review was collected as part of a promotion.] I was thinning in the front of my hair and after about three months of using Genesis, people started to notice the difference as well as my hairstylist

Originaly posted on  kerastase-usa.com

AMAZING!

[This review was collected as part of a promotion.] Great product and it actually works. My hair is growing. A must have staple for sure!

Originaly posted on  kerastase-usa.com

Worth every penny

I waited until I used every drop to make a review. I just finished my bottle after a couple months (USING CONSISTENTLY) and I can see a difference on how my hair grows and how much it grows. It builds strength and shine while smelling AMAZING. Just know that if you aren’t consistent it will not work.

Originaly posted on  kerastase-usa.com

Perfect

[This review was collected as part of a promotion.] I love it. This serum is perfect for damaged hair and smell so good

Originaly posted on  kerastase-usa.com

Good

[This review was collected as part of a promotion.] I can see a difference by using it, Im still at the beginning of my journey but I love kerastase products soo much

Originaly posted on  kerastase-usa.com

It is the ultimate.

[This review was collected as part of a promotion.] I loved it, this product has changed my hair a lot. I highly recommend it.

Originaly posted on  kerastase-usa.com

Excellent product does wonders to my hair love

[This review was collected as part of a promotion.] Stronger hair strength and less hair loss, love love

Originaly posted on  kerastase-usa.com

Great!

solid addition to my hair care routine. It doesn’t promise a miracle overnight, but it does deliver noticeable improvements in scalp health and shedding reduction over time

Originaly posted on  kerastase-usa.com

Love it

I have been using this for almost 3 months and I can see such a difference.. I highly recommend this

Originaly posted on  kerastase-usa.com

Great Serum

The Genesis Serum delivers! It smells amazing, doesn’t leave any residue, and I’ve begun to see hair growth. I wish I had started using this product sooner. I can’t recommend this product enough!

Originaly posted on  kerastase-usa.com

Great product!

I started to experience hair loss after losing weight. I started using this and my shedding decreased significantly. I use it daily after washing my hair and toweling drying. I very much recommend you purchase this.

Originaly posted on  kerastase-usa.com

Great product!

I’ve gone through a couple of bottles of this and it is the only hair serum that doesn’t weigh my thin hair down. It is the consistency of water and doesn’t leave your hair greasy or clumpy when you massage it in. I truly feel it helps my hair grow! I use it once a day usually at bedtime

Originaly posted on  kerastase-usa.com

Great serum !

It’s smell so good and fresh . I used before bed time and it makes my hair looks great , less fall off in the brush, it’s stronger and healthier.

Originaly posted on  kerastase-usa.com

will definitely buy again

Its the best!it helps my hair become so smooth and manageable

Originaly posted on  kerastase.ca

Excellent serum!!!!

I’ve lost count of how many bottles of this serum I’ve purchased—it’s that good. It has truly strengthened my hair and significantly reduced hair fall. The scent is absolutely luxurious and smells amazing.

Originaly posted on  kerastase-usa.com

Worst

I didn't get the results i have almost loose all my hair due to this product it doesnt worth the price

Originaly posted on  kerastase.ca

I RECOMMEND IT

[This review was collected as part of a promotion.] Buy it! I have got this product for 10 times! It reaaally helps and works as described :D

Originaly posted on  kerastase-usa.com

Very good product

Overall, the product is very good. It seems to leave my hair well-hydrated; however, it’s still too early to tell whether it really helps with strengthening. The only downside is the texture it leaves on my hair — when I apply the serum at night, I need to wash it the next morning because it makes my hair look a bit oily.

Originaly posted on  kerastase-usa.com

Amazing

[This review was collected as part of a promotion.] It really helped my hair grow and strengthen it. And it doesn't weigh down your hair. I really recommend it!

Originaly posted on  kerastase-usa.com